PCIEHP: Add Electro Mechanical Interlock (EMI) support to the PCIE hotplug driver.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 927dba9911ed..d19fcae8a7c0 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -69,6 +69,7 @@ struct slot {
         struct hotplug_slot *hotplug_slot;
         struct list_head        slot_list;
         char name[SLOT_NAME_SIZE];
+        unsigned long last_emi_toggle;
 };
 
 struct event_info {
@@ -138,6 +139,7 @@ struct controller {
 #define ATTN_LED_PRSN   0x00000008
 #define PWR_LED_PRSN    0x00000010
 #define HP_SUPR_RM_SUP  0x00000020
+#define EMI_PRSN        0x00020000
 
 #define ATTN_BUTTN(cap)         (cap & ATTN_BUTTN_PRSN)
 #define POWER_CTRL(cap)         (cap & PWR_CTRL_PRSN)
@@ -145,6 +147,7 @@ struct controller {
 #define ATTN_LED(cap)           (cap & ATTN_LED_PRSN)
 #define PWR_LED(cap)            (cap & PWR_LED_PRSN) 
 #define HP_SUPR_RM(cap)         (cap & HP_SUPR_RM_SUP)
+#define EMI(cap)                (cap & EMI_PRSN)
 
 extern int pciehp_event_start_thread(void);
 extern void pciehp_event_stop_thread(void);
@@ -182,6 +185,8 @@ struct hpc_ops {
         int (*set_attention_status)(struct slot *slot, u8 status);
         int (*get_latch_status)(struct slot *slot, u8 *status);
         int (*get_adapter_status)(struct slot *slot, u8 *status);
+        int (*get_emi_status)(struct slot *slot, u8 *status);
+        int (*toggle_emi)(struct slot *slot);
         int (*get_max_bus_speed)(struct slot *slot, enum pci_bus_speed *speed);
         int (*get_cur_bus_speed)(struct slot *slot, enum pci_bus_speed *speed);
         int (*get_max_lnk_width)(struct slot *slot, enum pcie_link_width *val);